source: trip-planner-front/node_modules/terser/lib/transform.js@ bdd6491

Last change on this file since bdd6491 was 6a3a178, checked in by Ema <ema_spirova@…>, 3 years ago

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1/***********************************************************************
2
3 A JavaScript tokenizer / parser / beautifier / compressor.
4 https://github.com/mishoo/UglifyJS2
5
6 -------------------------------- (C) ---------------------------------
7
8 Author: Mihai Bazon
9 <mihai.bazon@gmail.com>
10 http://mihai.bazon.net/blog
11
12 Distributed under the BSD license:
13
14 Copyright 2012 (c) Mihai Bazon <mihai.bazon@gmail.com>
15
16 Redistribution and use in source and binary forms, with or without
17 modification, are permitted provided that the following conditions
18 are met:
19
20 * Redistributions of source code must retain the above
21 copyright notice, this list of conditions and the following
22 disclaimer.
23
24 * Redistributions in binary form must reproduce the above
25 copyright notice, this list of conditions and the following
26 disclaimer in the documentation and/or other materials
27 provided with the distribution.
28
29 THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDER “AS IS” AND ANY
30 EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
31 IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
32 PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER BE
33 LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY,
34 OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
35 PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
36 PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
37 THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR
38 TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF
39 THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
40 SUCH DAMAGE.
41
42 ***********************************************************************/
43
44"use strict";
45
46import {
47 AST_Array,
48 AST_Await,
49 AST_Binary,
50 AST_Block,
51 AST_Call,
52 AST_Case,
53 AST_Catch,
54 AST_Chain,
55 AST_Class,
56 AST_Conditional,
57 AST_Definitions,
58 AST_Destructuring,
59 AST_Do,
60 AST_Dot,
61 AST_Exit,
62 AST_Expansion,
63 AST_Export,
64 AST_For,
65 AST_ForIn,
66 AST_If,
67 AST_Import,
68 AST_LabeledStatement,
69 AST_Lambda,
70 AST_LoopControl,
71 AST_NameMapping,
72 AST_Node,
73 AST_Number,
74 AST_Object,
75 AST_ObjectProperty,
76 AST_PrefixedTemplateString,
77 AST_Sequence,
78 AST_SimpleStatement,
79 AST_Sub,
80 AST_Switch,
81 AST_TemplateString,
82 AST_Try,
83 AST_Unary,
84 AST_VarDef,
85 AST_While,
86 AST_With,
87 AST_Yield,
88} from "./ast.js";
89import {
90 MAP,
91 noop,
92} from "./utils/index.js";
93
94function def_transform(node, descend) {
95 node.DEFMETHOD("transform", function(tw, in_list) {
96 let transformed = undefined;
97 tw.push(this);
98 if (tw.before) transformed = tw.before(this, descend, in_list);
99 if (transformed === undefined) {
100 transformed = this;
101 descend(transformed, tw);
102 if (tw.after) {
103 const after_ret = tw.after(transformed, in_list);
104 if (after_ret !== undefined) transformed = after_ret;
105 }
106 }
107 tw.pop();
108 return transformed;
109 });
110}
111
112function do_list(list, tw) {
113 return MAP(list, function(node) {
114 return node.transform(tw, true);
115 });
116}
117
118def_transform(AST_Node, noop);
119
120def_transform(AST_LabeledStatement, function(self, tw) {
121 self.label = self.label.transform(tw);
122 self.body = self.body.transform(tw);
123});
124
125def_transform(AST_SimpleStatement, function(self, tw) {
126 self.body = self.body.transform(tw);
127});
128
129def_transform(AST_Block, function(self, tw) {
130 self.body = do_list(self.body, tw);
131});
132
133def_transform(AST_Do, function(self, tw) {
134 self.body = self.body.transform(tw);
135 self.condition = self.condition.transform(tw);
136});
137
138def_transform(AST_While, function(self, tw) {
139 self.condition = self.condition.transform(tw);
140 self.body = self.body.transform(tw);
141});
142
143def_transform(AST_For, function(self, tw) {
144 if (self.init) self.init = self.init.transform(tw);
145 if (self.condition) self.condition = self.condition.transform(tw);
146 if (self.step) self.step = self.step.transform(tw);
147 self.body = self.body.transform(tw);
148});
149
150def_transform(AST_ForIn, function(self, tw) {
151 self.init = self.init.transform(tw);
152 self.object = self.object.transform(tw);
153 self.body = self.body.transform(tw);
154});
155
156def_transform(AST_With, function(self, tw) {
157 self.expression = self.expression.transform(tw);
158 self.body = self.body.transform(tw);
159});
160
161def_transform(AST_Exit, function(self, tw) {
162 if (self.value) self.value = self.value.transform(tw);
163});
164
165def_transform(AST_LoopControl, function(self, tw) {
166 if (self.label) self.label = self.label.transform(tw);
167});
168
169def_transform(AST_If, function(self, tw) {
170 self.condition = self.condition.transform(tw);
171 self.body = self.body.transform(tw);
172 if (self.alternative) self.alternative = self.alternative.transform(tw);
173});
174
175def_transform(AST_Switch, function(self, tw) {
176 self.expression = self.expression.transform(tw);
177 self.body = do_list(self.body, tw);
178});
179
180def_transform(AST_Case, function(self, tw) {
181 self.expression = self.expression.transform(tw);
182 self.body = do_list(self.body, tw);
183});
184
185def_transform(AST_Try, function(self, tw) {
186 self.body = do_list(self.body, tw);
187 if (self.bcatch) self.bcatch = self.bcatch.transform(tw);
188 if (self.bfinally) self.bfinally = self.bfinally.transform(tw);
189});
190
191def_transform(AST_Catch, function(self, tw) {
192 if (self.argname) self.argname = self.argname.transform(tw);
193 self.body = do_list(self.body, tw);
194});
195
196def_transform(AST_Definitions, function(self, tw) {
197 self.definitions = do_list(self.definitions, tw);
198});
199
200def_transform(AST_VarDef, function(self, tw) {
201 self.name = self.name.transform(tw);
202 if (self.value) self.value = self.value.transform(tw);
203});
204
205def_transform(AST_Destructuring, function(self, tw) {
206 self.names = do_list(self.names, tw);
207});
208
209def_transform(AST_Lambda, function(self, tw) {
210 if (self.name) self.name = self.name.transform(tw);
211 self.argnames = do_list(self.argnames, tw);
212 if (self.body instanceof AST_Node) {
213 self.body = self.body.transform(tw);
214 } else {
215 self.body = do_list(self.body, tw);
216 }
217});
218
219def_transform(AST_Call, function(self, tw) {
220 self.expression = self.expression.transform(tw);
221 self.args = do_list(self.args, tw);
222});
223
224def_transform(AST_Sequence, function(self, tw) {
225 const result = do_list(self.expressions, tw);
226 self.expressions = result.length
227 ? result
228 : [new AST_Number({ value: 0 })];
229});
230
231def_transform(AST_Dot, function(self, tw) {
232 self.expression = self.expression.transform(tw);
233});
234
235def_transform(AST_Sub, function(self, tw) {
236 self.expression = self.expression.transform(tw);
237 self.property = self.property.transform(tw);
238});
239
240def_transform(AST_Chain, function(self, tw) {
241 self.expression = self.expression.transform(tw);
242});
243
244def_transform(AST_Yield, function(self, tw) {
245 if (self.expression) self.expression = self.expression.transform(tw);
246});
247
248def_transform(AST_Await, function(self, tw) {
249 self.expression = self.expression.transform(tw);
250});
251
252def_transform(AST_Unary, function(self, tw) {
253 self.expression = self.expression.transform(tw);
254});
255
256def_transform(AST_Binary, function(self, tw) {
257 self.left = self.left.transform(tw);
258 self.right = self.right.transform(tw);
259});
260
261def_transform(AST_Conditional, function(self, tw) {
262 self.condition = self.condition.transform(tw);
263 self.consequent = self.consequent.transform(tw);
264 self.alternative = self.alternative.transform(tw);
265});
266
267def_transform(AST_Array, function(self, tw) {
268 self.elements = do_list(self.elements, tw);
269});
270
271def_transform(AST_Object, function(self, tw) {
272 self.properties = do_list(self.properties, tw);
273});
274
275def_transform(AST_ObjectProperty, function(self, tw) {
276 if (self.key instanceof AST_Node) {
277 self.key = self.key.transform(tw);
278 }
279 if (self.value) self.value = self.value.transform(tw);
280});
281
282def_transform(AST_Class, function(self, tw) {
283 if (self.name) self.name = self.name.transform(tw);
284 if (self.extends) self.extends = self.extends.transform(tw);
285 self.properties = do_list(self.properties, tw);
286});
287
288def_transform(AST_Expansion, function(self, tw) {
289 self.expression = self.expression.transform(tw);
290});
291
292def_transform(AST_NameMapping, function(self, tw) {
293 self.foreign_name = self.foreign_name.transform(tw);
294 self.name = self.name.transform(tw);
295});
296
297def_transform(AST_Import, function(self, tw) {
298 if (self.imported_name) self.imported_name = self.imported_name.transform(tw);
299 if (self.imported_names) do_list(self.imported_names, tw);
300 self.module_name = self.module_name.transform(tw);
301});
302
303def_transform(AST_Export, function(self, tw) {
304 if (self.exported_definition) self.exported_definition = self.exported_definition.transform(tw);
305 if (self.exported_value) self.exported_value = self.exported_value.transform(tw);
306 if (self.exported_names) do_list(self.exported_names, tw);
307 if (self.module_name) self.module_name = self.module_name.transform(tw);
308});
309
310def_transform(AST_TemplateString, function(self, tw) {
311 self.segments = do_list(self.segments, tw);
312});
313
314def_transform(AST_PrefixedTemplateString, function(self, tw) {
315 self.prefix = self.prefix.transform(tw);
316 self.template_string = self.template_string.transform(tw);
317});
318
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